Water-pump.



0. E. SZEKELY.

WATER PUMP.

' APPLICATION FILED MAY 3.19IB. 1,295,234. Patented Feb. 25, 1919.

3 SHEETS-SHEET l- 5 O. E. SZEKELY.

WATER PUMP.

APPLICATION FILED AY 3. ms.

1 ,295,234. Patented Feb. 25, 1919.

3 SHEETS-SHEET 2- 0. E. SZEKELY.

WATER PUMP.

APPLICATION FILED MAY 3. 1918.

1,295,234. Patented Feb. 25, 1919.

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OTTO E. SZEKELY, OF ROCK ISLAND, ILLINOIS, ASSIGNOR 'I'O VELIE MOTORSCORPO- RAMON, OF MOLINE, ILLDNOIS, A CORPORATION OF ILLINOIS.

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specification of Letters Patent.

Patented Feb. 25, 191 .9.

Application filed May 3, 1918. Serial No. 232,321.

To all whom it may concern:

Be it known that l, O'rro E. Sznnnnr, a citizen of the United States,and a resident of Rock Island,in the county of Rock Island and State ofIllinois, have invented certain new and useful Improvements in Water-Pumps, of which the following is a specification.

My invention relates to an improved water pump which can beeasily andreadily attached to automobile engines for the purpose of circulatingthe engine cooling water.

In prior arrangements pumps have been provided to be connected to bedriven at considerable speed, such pumps being small and usually of thecylinder type. In its travel through the radiator tubing and the enginewater jacket passageways the cooling water encounters many obstacles andresistance and where the pump is driven at high speed the water pumpedthereby will not flow uniformly through the various passageways, but theflow will be more or less impulsive or vibratory. The water will nothave a chance to eficiently absorb heat nor will the radiator have achance to emciently dissipate heat.

The object of my invention is to provide a larger pump which can beconnected with so the engine to be driven at slower speed so that thewater flow through the circulatory system will be uniform and the wateris given a chance to absorb the heat from the engine and to dissipatethe heat during flow 85 through the radiator. This uniform circulationof the water will also permit thermosiphon circulation, that is, theupward flow of heated water and the downward flow of cooler water.Another object of the inso vention is to produce a simple compact pumpstructure which can be easily" andquickly attached to or removed fromthe engine structure, provision being made to connect the pump shaftdirectly with the engine cam at shaft.

The above and other features of my invention are embodied in thestructure disclosed on the accompanying drawings, in which- Figure 1 isan end view of part of an engine structure showing my improved pumpapplied thereto,

Fig. 2 is a sectional view on plane 22, Fig. 1, 4

Fig. 3 is a sectional view on plane 3 -3,

Fig. 2, and

Fig. 4 is a sectional view on plane 4-4, Fig. 3.

E represents the cylinders and C the crank case of the engine housing.10 is the crank shaft which is journaled at one end in the bearing frame11. 12 is the cam shaft parallel with the crank shaft and journaledinthe frame 13. Adjacent the bearing frame 11 is the gear pinion 14 whichmeshes with the gear 15 secured to the end of the cam shaft by means ofscrews 16 passing through the hub of the gear 15. The cover 17 issecured to the fiange18 ofthe engine housing by means of screws 19 andcloses the end of the crankcase and surrounds the gears 14 and 15, thecover having the outlet 20 for the crank shaft end which supports thecrank socket 21. Outside of the driven directly by the cam shaft. The

pump structure comprises a circular pump body 23 having the annularwater compartment 24 from which the outlet ipe 25 ex tends tangentiallyto be coupled at its end to a pipe 26 which extends to the top of thevehicle radiator. The cover or cap 27 is secured to the pump body byscrews 28 and at the center of this cover is the enlargement 29 fromwhich the pipe'30 extends to j shaft 33, a stuifing cap 34 beingprovided.

Inside ofthe pump the shaft supports the pump wheel w. This wheelcomprises the hub 35 which supports the circular disk 36 from which thevanes or blades 37 extend laterally. The back of the disk 36 bearsIagainst the pump body inner wall and the ades bear, at their outeredges against the cover 27. The blades are inclined at suitable anglewith reference to the wheel radius depending upon the volume of flowdesired, water being drawn into the chamber 31 through the pipe 30 andbeing expelled by the blades into the annular pump chamber 24 and fromthence through the pipie 25 to the radiator.

he pump body has arms 38 and 39 extending radially and laterallytherefrom, these arms having the slots 40 and 41 at their ends forreceiving the bolts 42 and 43 which thread into the engine housing cover17 or extend entirely through the cover to thread also into the flange18. The shaft 33 terminates at outer end in a flange 44 which hasopenlngs for receiving the screws 16 in order that the flange may besecured to the 'cam shaft in common with the gear 15 to support the pumpshaft 33 in axial alinement wit the cam shaft. To accommodate the thepump shaft, the cover 17 is provided with the bearing hub 45 havingthegroove 46 therein for receiving packing 46.

When the pump is to be applied, the cover 17 is removed and the umpshaft secured to the cam shaft, and t e cover 17 then replaced. The pumpframe is then secured by means of the bolts 42 and 43 and the pump wheelapplied to the pump shaft and the pump frame cover 27 secured in place.To prevent binding of the shaft 33 suflicient lost motion is providedbetween the. bolts 42 and 43 and the supporting arms 38 and 39 to permitshifting of the pump frame and self centering thereof with reference tothe shaft 33 as the pump is operated' As shown, the enlarged shanksections a of the screws 42 and 43 are of slightly less diameter thanthe width of the slots 40 and 41 and the length of the shank sections isa trifle greater than the thicknem of the arms 38 and 39. The slots arealso of suflicient depth to leave clearance space Between their basesand the enlarged shank sections. This arrangement will permit suflicientplay of the pump frame after the screws 42 are turned down tight and thepump frame can therefore readily center itself to prevent binding of thepump shaft 33 thereinthe proper volume of cooling water and will causesteady and uniform flow of the water through the various passageways ofthe cooling circulatory system and at a proper ve-.

locity to permit the water to efliciently takeup heat from the engineand give the radiaitor a chance to radiate the heat. I have found thatmy pump will keep the cooling water at a substantially constanttemperature irrespective of the speed at which the engine is running,for at any speed of the engine the flow of cooling water will be steadyand uniform. In prior arrangements the higher theengine speed the morerapid the water pulsations and the less the cooling efliciency will be.

I do not desire to be limited to the exact construction, arrangement andoperation shown and described as it is no doubt possible to make changesand modifications which would still come within the scope of theinvention.

, I claim as follows:

1. The combination with a gas engine having a crank shaft and a valvecontrolling cam shaft driven by the crank shaft, and a housing for saidshafts, of a pump shaft extending axially from said cam shaft throughsaid housing, a pump frame detacha'bly secured to said housing,- a pumpwheel for the pump secured to the pump shaft, said pump having an inletand an outlet adapted for connection with the cooling water circulatorysystem for the engine.

2. The combination with an engine having a shaft, a housing for theshaft, an extension on said shaft extending axially therefrom throughsaid housing, a pump frame receiving said shaft extension, a pump Wheelwithin the pump frame secured to the shaft extension to rotatetherewith, means for supporting said pump frame on the outside of saidhousing, said supporting means permitting limited movement of said pumpframe to center itself with reference to the pump shaft during rotationthereof, and a fluid inlet and outlet for said frame.

" 3. The combination with a gas engine having a crank shaft and a camshaft, a gear on said crank shaft and a gear on said cam shaft, saidgears intermeshing to transmit rotation from one shaft to the other, ahousing. inclosing said gears, a rotary pump frame detach-ably securedto said housing concentric with said cam shaft, a pump shaft detachablysecured to said cam shaft gear to be coaxial with said cam shaft torotate therewith, a pump piston member sean outlet for said pump frame.

4. The combination with a gas engine having a crank shaft and a camshaft, a gear on said crank shaft, a gear secured by its hub to theendof said cam shaft, said gears intermeshing, a housing for said gears,an opening in said housing opposite the cam shaft end, of a pumpcomprising a pump frame detachabiy secured to said housing,

and a pump shaft extending through said housing opening and detachablysecured to said cam sh aft gear hub concentric with said cam shaft.

In Witness whereof I hereunto subscribe my name this 20th day of April,A. D. 1918,

OTTO E. SZEKELY.

